VMI		VMIR		Differential 
 1/5/2007		0.74%		0.74%		0.00% 
 1/12/2007		1.77%		1.77%		0.00% 
 1/19/2007		2.75%		2.75%		0.00% 
 1/26/2007		5.00%		5.00%		0.00% 
 2/2/2007		7.85%		8.26%		0.41% 
 2/9/2007		11.11%		12.53%		1.42% 
 2/16/2007		13.60%		14.59%		0.99% 
 2/23/2007		15.34%		16.84%		1.50% 
 3/2/2007		9.18%		10.68%		1.50% 
 3/9/2007		9.94%		12.91%		2.97% 
 3/16/2007		9.70%		13.84%		4.14% 
 3/23/2007		14.20%		18.70%		4.50% 
 3/30/2007		13.02%		17.12%		4.10% 
 4/5/2007		15.60%		20.63%		5.03% 
 4/13/2007		17.72%		24.06%		6.34% 
 4/20/2007		19.25%		26.16%		6.91% 
 4/27/2007		23.54%		28.44%		4.90% 
 5/4/2007		24.44%		29.99%		5.55% 
 5/11/2007		24.26%		33.15%		8.89% 
 5/18/2007		20.62%		29.72%		9.10% 
 5/25/2007		21.00%		28.78%		7.78% 
 6/1/2007		22.38%		29.68%		7.30% 
 6/8/2007		21.08%		27.98%		6.90% 
 6/15/2007		23.68%		30.75%		7.07% 
 6/22/2007		27.70%		35.40%		7.70% 
 6/29/2007		25.98%		34.58%		8.60% 
 7/6/2007		30.65%		39.79%		9.14% 
 7/13/2007		32.86%		45.66%		12.80% 
 7/20/2007		34.20%		48.68%		14.48% 
 7/27/2007		24.91%		38.19%		13.28% 
 8/3/2007		20.14%		36.64%		16.50% 
 8/10/2007		16.97%		33.47%		16.50% 
 8/17/2007		11.53%		28.89%		17.36% 
 8/24/2007		14.11%		37.24%		23.13% 
 8/31/2007		14.35%		36.65%		22.30% 
 9/7/2007		15.53%		40.00%		24.47% 
 9/14/2007		16.86%		39.82%		22.96% 
 9/21/2007		20.89%		52.06%		31.17% 
 9/28/2007		25.57%		57.16%		31.59% 
 10/5/2007		35.84%		63.63%		27.79% 
 10/12/2007	36.71%		67.57%		30.86% 
 10/19/2007	34.72%		65.93%		31.21% 
 10/26/2007	39.51%		68.58%		29.07% 
 11/2/2007		38.07%		70.32%		32.25% 
 11/9/2007		29.60%		61.94%		32.34% 
 11/16/2007	20.77%		51.60%		30.83% 
 11/23/2007	13.11%		42.42%		29.31% 
 11/30/2007	16.32%		48.78%		32.46% 
 12/7/2007		17.69%		54.43%		36.74% 
 12/14/2007	13.85%		49.28%		35.43% 
 12/21/2007	12.30%		48.96%		36.66% 
 12/28/2007	15.58%		53.82%		38.24% 
 12/31/2007	16.78%		56.16%		39.38%